◆ SpookStack

12/6/71 SAC, SEATTLE (164-81) SAC, DETROIT (164-115) (P) UNSIB, aka,, Dan Cooper Northwest Airlines Flight Number 305 Portland to Seattle 11/24/71 CAA - HIJACKING; EXTORTION (00: SEATTLE) Re Seattle teletype to Bureau dated 11/29/71. Enclosed for Seattle is membership list of "POPS", over-forty parachutist group. Also enclosed are copies of membership cards and where appropriate, the information appearing on the rear of these membership cards of the “POPs" organization, | Review of these cards left to discretion of 00 and may be of value in developing suspect or individuals who may be able to furnish information on UNSUB, Interview wit “pops" Parachutists Over Phorty Society » surnishe e following information to SA DONALD A, THIEL: @)- seattle (mc, 122) 2 - Detroit DAT :rck (4) amen aries bhatt DB Cooper-3689